Automatic air-valve.



J. P. MARSH.

AUTOMATIG AIR VALVE.

APPLICATION FILED JULY 9, 1908.

htented. Nov. 30, 1969.

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n0 awer 4 cl laced if I p01). the en 6 t plece and ;-0 permit 0111 withto the bott uge u ex tens-1011 n 1 n Go the $5119.? W111 be p pm'fm'ated2 9d1,'?91 prevent the escape of water, Then the gil comprising a casecontaining acchamloer with ta'tor operates as above Suggested to free arelief aperture at the upper end, a water the chamber from water. Theimpurities of discharging aperture at the lower end, an the water,whatever they may be, and of the expansion piece and a vertically flutedfloat steam and .air, tend obviously to accumulate with a valve thereonin the chamber adapted on the opposed walls of float and chamber tocontrol such relief aperture and a drainand if large areas of such'surfaces are exage rod in the water discharging aperture. posed toeach'othejrthey are likely, with the 3. An automatic air valve forradiators accumulation of such foreign matters, to. comprising a casecontaining a chamber with adhere or'increase' the frictionp that th arelief aperture at the upper end, water float is not free to moveupwardly or d discharging aperture at the lower end, an 'wardly''asitiought-to move. NJith the corexpansion piece and a verticallyfluted float 'rugated float here Qhown diagrammatically, with a valvethereon in the chamber adapted the fluti-n'gs come to a relatively fineed to control such relief aperture and a drain- "and in; practiceusually not more than one g od i he Water discharging aperture of .suchcdgeis ever in contact with or in close a r ss s ti n other thancircular. I proximity tothe opposed chamber wall 4. An automatic airvalve for radiators 80. and hence there are no extended area in com)risinga case containing a chamber with close relation. I a re iefaperture atthe upper end, a dis- By arranging the cap and valve plugwith charge passage way leading thence to the the two pac 'ngs'I securea very tight joint open air and having at some place along its toprevent the escape of steam, air or wat len h a relatively large crosssection, a. cap through the screw threaded connecting parts. i110 d g cQ S Section, disk Valve ,"Fhe l'valve aperture rapidly enlarges untillying upon such cross sectional opening, the op i rms-r f. th ca is very-a disk weight on the valve, a water dis-' large, leavmg a freeJexit-forair or steam, charging aperture at the lower end oft-he when th latterfor some short period is. chamber, an expansion piece, and a verfree toescape. To close this large opening tically fluted float with'a valvethereon in I emplo the disk valve which is no more the chamber tocontrol such relief valve. than a, at disk lying upon the top of the 5.An automatic air valve for radiators opening. vIt maybe made of anydesired com rising a case containing a chamber with material butpreferably make it of comare ief aperture at the upper end, adispressiblematerial and I preferably employ charge passage way leadingthence to the on top of it a relatively hard weight also open air andhaving at some place alonglits in'the shape of a disk. Thisarrangement Ilength a relatively large cross section, a cap find makes a very freeand open passage including such cross sectionfa disk valve c with aneasil moving valve. There is no lying upon such cross sectional opening,a

tendency of the valve to stick and no diiilfdisk weight on the valve, awater dischargculty in placing or retaining it in proper ing aperture atthe lower end of the chamrelation. The -crown piece does this. The her,an expansion piece, a vertically fluted depending pin p'revents theparts from risfloat with a valve tnereon in the chamber to ingout ofproper relation, to each other or control'sucl rel-ief valve, and adrainage rod the opening. in the wategdischarging aperture of a crossThe drainage rod or agitator tends to keep section other than circular.V the assage open and let the Water. run out 6. An automatic air valvefor radiators 0f the chamber; thecorru ated float has comprisin a casecontaining a chamber little tendency to stick to the walls of the withit re. ief aperture at the upper end, a

. chamber; the relief passage way from the discharge passage wayjleadingthence to the chamber to the open air is provided at one open air andhavin at someplacealong its point along its route with a large openingso length a relat'vel'y large cross section, a cap asto permit a freedischarge of whatever including S1151 cross section, a disk valve it isdesired to eject, and this opening is conlying u on such crosssectionalopening, a trolled by'a' weighted valve Which'will not disk weight onthe 'valve, a water dischargeasily stick or clog. ing a erture at thelower end of the cham- I claim: l I her, an expansion piece, and avertically 1. An automatic air valve for radiators fluted float witha,.valve ,thereon in the com rising a'c'asc containing a chamber withchamber to control such relief valve, and a a re ief aperture atthe-:upper end, a water drainage rod in the water discharging aper-Fdischarging aperture at the lower end, an ture of a cross section otherthan circularp expansion iece and 'a'verticallyfluted float 6 JAMES PMARSH. with a'vave thereon 'in the chamber and Witnesses: adapted tocontrol such relief a erture'.v Mnvnrn M. L InnivA or radiators EDNA K.RnYNoLos.

2. An automatic air valve

